The paper is “Ultrahigh-pressure disordered eight-coordinated phase of Mg2GeO4: Analogue for super-Earth mantles.” The lead author is Rajkrishna Dutta, a post-doctoral fellow at Carnegie’s Earth and Planets Laboratory. The paper is published in the Proceedings of the National Academy of Scien...
But there are limitations on scientists’ ability to recreate the conditions of exoplanetary interiors in the lab. Theoretical modeling has indicated that new phases of silicate emerge under the pressures expected to be found in the mantles of rocky exoplanets that are at le...
Freeze-out of the gas phase elements onto cold grains in dense interstellar and circumstellar media builds up ice mantles consisting of molecules that are ... ACA Boogert,PA Gerakines,DCB Whittet - 《Annual Review of Astronomy & Astrophysics》 被引量: 33发表: 2015年 Thermal non destructive ...
Hotter mantles, such as those beneath oceans, prevent sampling strongly silica-undersaturated, carbonated melts such as kimberlites as shallower basaltic melt generation dominates. Thick thermal boundary layers, such as those in cratonic regions, on the other hand allow production of kimberlitic to ...
Normal High Temperature: 31.9° F Normal Low Temperature: 19.5° F Lake, Pond, Stream & Wetland Conditions: The Lake Erie water temperature off Buffalo cooled to 38°F and the Lake Ontario water temperature off Greece (Monroe County) cooled to 39°F as of January 2, 2019. Water levels ...
The till is a persistent ground-moraine deposit that mantles most of the area of the plateau segments and passes beneath much of the outwash and alluvium of the valleys. The till is a great vaster of precipitation; it. sheds off to the creeks much water that would otherwise recharge the ...
Furthermore, the ability of dense molecular clouds to protect their interiors from UV irradiation, allows their gasses to condense to form ice as mantles on dust grains through gas-grain chemistry [27,28,29]. The ice has been found to consist of a number of volatiles in addition to water ...